Performance of the 13C-urea breath test for the diagnosis of H. pylori infection using a substrate synthesized in Brazil: a preliminary study - Coelho, Luiz Gonzaga; Sant'Ana, Carlos Roberto; Oliveira, Ricardo Brandt de; Cezar, Raíra César e; Araujo, Aline Cordeiro Campos de; Silva, Raisa Cristina Teodoro da; Trindade, Osmar Reni; Coelho, Maria Clara; Ferrioli, Eduardo; Bendassolli, Jose Albertino (Clinics, 2018)